CN2218018Y

CN2218018Y - Automatic low water content press filter

Info

Publication number: CN2218018Y
Application number: CN 95233236
Authority: CN
Inventors: 汤力
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-02-25
Filing date: 1995-02-25
Publication date: 1996-01-24
Anticipated expiration: 2005-02-25

Abstract

The utility model relates to a fully automatic low water content press filter. Filter plates are not wrapped by filter cloth, and the closed filter cloth is sheathed on an upper rotating shaft and a lower rotating shaft by a filter chamber; coal slurry inlets and compressed air inlets are opened on both lateral surfaces of each filter plate, and both faces of each filter plate are provided with a diaphragm and a filter screen. After coal slurry water and polluted water are processed, the water content of a filter cake is 7-12%, so the condition that the coal slurry or sludge can not be directly loaded on a vehicle for transport to pollute the ground is thoroughly solved. A use unit disassembles an existing filter press without the need of changing foundation bolts, and the utility model can be assembled. A manufacturing unit can produce the fully automatic low water content press filter without the need of adding new devices. The fully automatic low water content press filter can be widely used for polluted water processing in industries such as coal, metallurgy, petroleum, chemical engineering, etc.

Description

Full-automatic low moisture filter press

The utility model relates to a kind of filter press, especially for the recovery of fines in the colliery coal preparation plant black water, realizes a kind of device of Separation of Solid and Liquid.Belong to sewage treatment area.

China coal preparation plant plate fine grained (solid-liquid separation technique of d＜0.2mm) often adopts a, sedimentation-type centrifuge, b, belt filter press, and c, filter press are handled.Coal-dressing plant is all used the make a final check equipment of filter press as black water, sewage disposal at present, when black water or sewage by behind the filter press, coal slime in the black water or the mud in the sewage form filter cake and obtain reclaiming, and moisture in the black water or the moisture in the sewage form that filtrate reaches promptly that environmental requirement can be discharged or is multiplexing.But maximum problem be filter cake moisture up to 22～26%, directly entrucking transportation separately if sneak into coal bunker, is lumpd among the Yi Zaicang, stops up Hatch Opening, can not put the storehouse, influences entrucking and production.The filter cake moisture height can only dry in the air to reduce moisture in the occupied ground solarization, and floor space pollutes ground greatly like this.Branch is high because filter is supplied water in addition, and price is low, influences economic benefit.

The purpose of this utility model is to install some parts or mechanism on common filter press additional, manufactures the low moisture filter press, and it can make filter cake moisture drop to 7～12% by 22～26%, thoroughly solves the directly entrucking transportation of coal slime or mud, pollutes the situation on ground.

Solution of the present utility model is achieved in that filter cloth (4) does not wrap up filter plate (2), and closed filter cloth (4) is that filter chamber (1) is enclosed within on turning cylinder (10) and the following turning cylinder (11) by the cavity that forms between per two filter plates; Be provided with barrier film (8) in every filter plate (2) one side; The one side that falls in is provided with filter screen (3), has compressed air inlet (7) in top, (2) two sides of every filter plate.

For realizing each filter chamber pan feeding in parallel, have coal slurry inlet (5) in the below, two sides of every filter plate (2), be connected with rubber hose between the house steward on the frame and each coal slurry inlet (5).

For realizing that one one is unloaded cake, the cake mechanism (14) of unloading of this device is made up of oil motor, driving-chain, sprocket wheel, support and carriage drive device, when needs unload filter cake, oil motor drives driving-chain and drives the carriage drive device to accurate position, and the support on it moves down and colludes (9) and be connected and drive filter cloth (4) filter cake is unloaded with taking.

Establish a hairbrush (15) in filter cloth (4) below filter cloth (4) is uninterruptedly cleaned with water for clearing up cinder remaining on the filter cloth at any time.

The significant effect of the utility model is to adopt compressed air and dividing plate that filter cake is pushed with air-dry, thereby make filter cake moisture drop to 7～12% by original 22～26%, thoroughly solving coal slime or mud can not binning, the directly situation on entrucking transportation pollution ground.This installs another characteristics is to make filter cloth rotate the back filter cake to be forced to discharging, and filter cake can not retain or be bonded on the filter cloth.Another distinguishing feature is that filter cloth is carried out backwash, because the contact-making surface of filter cloth and filter cake unloads the one side that has forwarded to after the cake towards filter screen (3) and filtrate (liquid (6), the high pressure clear water can fully penetrate micropore like this, and filter cloth cleans totally thoroughly.

Fig. 1 is a whole assembling schematic diagram of the present utility model;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is a filter chamber filter process schematic diagram;

Fig. 4 is a filter chamber inner septum extrusion process schematic diagram;

Fig. 5 is the air drying process schematic diagram;

Fig. 6 discharges schematic diagram for filter cake;

Fig. 7 cleans schematic diagram for filter cloth;

Among the figure:

1-filter chamber 2-filter plate

3-filter screen 4-filter cloth

5-coal slurry inlet 6-filtrate (liquid

7-compressed air inlet 8-barrier film

9-takes and colludes upward turning cylinder of 10-

Turning cylinder 12-oil cylinder under the 11-

13-opens the 14-of frame mechanism and unloads cake mechanism

The 15-hairbrush

The contrast accompanying drawing further describes the working condition of this device below:

The course of work of this device is: 1, filter process; 2, barrier film extrusion process; 3, air drying process; 4, filter cake is discharged; 5, filter cloth cleans.Wherein preceding 4 processes are a circulation, and the 5th process decided by the filter cloth pollution level.Above 5 processes of following division:

1, filter process (Fig. 3): after with oil cylinder (12) all filter plates (2) being compressed, form filter chamber (1) between per two filter plates, start coal slurry pump this moment, coal slurry enters filter chamber (1) by coal slurry inlet (5), because the pressure effect of pump, filter cloth has micropore on (4), moisture in the coal slurry or in the mud sees through micropore, in filter screen (3), flow to filtrate (liquid (6), enter feeder, change reservoir over to and use for circulation.Fines in the coal slurry are blocked in the filter chamber (1) by filter cloth (4), form filter cake, and this moment, the moisture of filter cake was 22～26%.

2, barrier film extrusion process (Fig. 4): when filtrate (liquid (6) no longer includes the filtrate discharge, coal slurry pump quits work, start air compressor this moment, compressed air enters barrier film (8) left side by its inlet (7), barrier film (8) is heaved, the extruding filter cake, thus extrude portion of water and discharge by filtrate (liquid (6).

3, air drying process (Fig. 5): barrier film (8) extrusion process finishes, filter cake moisture further reduces, feed compressed air from coal slurry inlet (5) this moment again, barrier film (8) is depressed into the original place on the one hand, compressed air constantly dries up the moisture of filter cake simultaneously, and the moisture of filter cake reduces to 7～12% in this process.

4, filter cake is discharged (Fig. 6): then open frame mechanism (13) and begin action after the low moisture filter cake forms, filter plate (2) is drawn back certain distance, the support that unloads cake mechanism (14) this moment from the top shelf drive unit, move out with filter cloth (4) on take and collude (9) the drive filter cloth that is connected and move from the top down, filter cake also moves down thereupon, enters in the transporter that is located at below the filter press to transport.After filter cake is discharged, support stops to move downward but is being with to take and is colluding (9) and filter cloth moves up, and filter cloth (4) is resetted, and the filter plate of this device is one one and is drawn back, filter cloth is the motion from bottom to top more from top to bottom of an elder generation, and filter cake is one one and is discharged from.When last piece filter cake is discharged from after simultaneously filter cloth (4) resets, oil cylinder (12) begins action, and all filter plates (2) are compressed again, begins to repeat above-mentioned four processes.

5, the cleaning of filter cloth (Fig. 7): because constantly filtration coal slurry or mud, filter cloth (4) can be dirty, and filter effect degenerates, and can clean this moment to filter cloth (4).After filter cake was all discharged, according to giving the operation sequence that is provided with earlier, the support that unloads cake mechanism (14) no longer retracted the original place to filter cloth (4).At this moment use oil cylinder (12) that all filter plates (2) are compressed, locate to squeeze into the high pressure clear water by coal slurry inlet (5) and carry out backwash, originally the contact-making surface of coal slurry and filter cloth (4) has forwarded the one side towards filter screen (3) and filtrate (liquid (6) to, the high pressure clear water can fully penetrate micropore, micropore is restored to the original state, and pollutant is discharged by filtrate (liquid (6) with cleaning fluid.After finishing, cleaning stops the high-pressure wash pump, oil cylinder (12) unclamps, open (13) one one in frame mechanism and draw back filter plate (2), the support that unloads cake mechanism (14) retracts the original place from bottom to top to one one block filter cloth (4), after last piece filter cloth (4) resets, oil cylinder (12) begins action, and filter plate (2) is compressed again, can begin four above-mentioned courses of work.

The cleaning of filter cloth (4) is determined according to the degree and the filter effect of its pollution.

Claims

1, a kind of by frame, filter plate, oil cylinder, open frame mechanism, unload the full-automatic low moisture filter press that cake mechanism, pumping plant and switch board etc. are formed, it is characterized in that: filter cloth (4) does not wrap up filter plate (2), the filter cloth of each piece closure (4) is enclosed within on turning cylinder (10) and the following turning cylinder (11) by filter chamber (1), one side at every filter plate (2) is provided with barrier film (8), the one side that falls in is provided with filter screen (3), has compressed air inlet (7) in the top, two sides of every filter plate (2).

2, according to the said low moisture filter press of claim 1, it is characterized in that: the below, two sides at every filter plate (2) has coal slurry inlet (5), is connected with rubber hose between the house steward on the frame and each coal slurry inlet (5).

3, according to the said low moisture filter press of claim 1, it is characterized in that: unload cake mechanism (14) and comprise oil motor, driving-chain, sprocket wheel, support and carriage drive mechanism.

4, according to the said low moisture filter press of claim 1, it is characterized in that: take in the top of filter cloth (4) installing one and collude (9).

5, according to the said low moisture filter press of claim 1, it is characterized in that: be provided with hairbrush (15) in the below of filter cloth (4).